|Summary:||The systems assigns itself a wrong IP #|
|Product:||[Retired] Red Hat Linux||Reporter:||jack|
|Component:||kernel||Assignee:||Michael K. Johnson <johnsonm>|
|Status:||CLOSED NOTABUG||QA Contact:|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2000-02-17 21:53:22 UTC||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description jack 2000-01-06 20:35:00 UTC
Within the ifcfg-eth0 file the machine is assigned an ip number lets say x.x.165.5, after the system loads ifcfg-eth0 & several alias files ifcfg-eth0:1 - ifcfg-eth0:15 and you run ifconfig it reports back that the ifcfg-eth0 is the x.x.165.5 ip number as expected, and those other alias files as well. Now here is the problem, when you telnet from this machine into another computer, that computer sees your IP number as x.x.165.43 and not x.x.165.5. The ip number it is acting as is one of the valid alias IP numbers, but is *not* the one we assign to the machine. If I manipulate the ifcfg-eth0:1 - ifcfg-eth0:15 filenames so that a different ip number is contained within lets say ifcfg-eth0:1 it then thinks that, that is the ip number for the machine again istead of x.x.165.5. The problem of course is that we restrict security to our other linux servers by IP number, and since this IP number is wrong we can't access our other servers. One footnote is that if you ping or query the proper ip number, that works, it's just when you telnet or ftp from the console into an other system that it sees it wrong.
Comment 1 Ben LaHaise 2000-02-17 21:53:59 UTC
What netmask are you adding the aliases with? It sounds like the aliases are being added with the same netmask as the rest of the network instead of 255.255.255.255, which will lead to a network route being installed for each alias that overrides the default netmask.